Engel. Unaffordable. University of Wisconsin Press.
芝加哥风格引文Engel. Unaffordable. University of Wisconsin Press.
MLA引文Engel. Unaffordable. University of Wisconsin Press.
警告：这些引文格式不一定是100％准确.
APA引文
Engel. Unaffordable. University of Wisconsin Press.
芝加哥风格引文Engel. Unaffordable. University of Wisconsin Press.
MLA引文Engel. Unaffordable. University of Wisconsin Press.